theorem instCoeBigCoffeeChainCoffeeChain._proof_1
theorem instCoeBigCoffeeChainCoffeeChain._proof_1: ∀ (v : zvf2jw0p.BigCoffeeChain), zvf2jw0p.CoffeeChain.Is (Subtype.val v)
theorem instCoeBigCoffeeChainCoffeeChain._proof_1
theorem instCoeBigCoffeeChainCoffeeChain._proof_1: ∀ (v : zvf2jw0p.BigCoffeeChain), zvf2jw0p.CoffeeChain.Is (Subtype.val v)